Thabit al-Bunani said that when Anas b. Malik was asked whether they disapproved of cupping for one who was fasting in the time of God’s messenger he replied, “No, except if it had a weakening effect.”
Bukhari said without a complete isnad that Ibn ‘Umar used to have himself cupped whan he was fasting. Then he abandoned it and had himself cupped at night.
He reported God’s messenger as saying, “Many a one who fasts gets nothing from his fasting but thirst, and many a one who prays
during the night gets nothing from his night prayers but wakefulness.”
Darimi transmitted it. The tradition of Laqit b. Sabira has been mentioned in the chapter on how to perform ablution.